| 丙二醇二甲醚的合成 |
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| 引用本文： | 朱新宝,王甫泉,藏莹.丙二醇二甲醚的合成[J].石油化工,2004,33(4):356-359. |
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| 作者姓名： | 朱新宝 王甫泉 藏莹 |
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| 作者单位： | 1. 南京林业大学,江苏,南京,210037
2. 天池化工厂,安徽,绩溪,230000 |
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| 摘 要： | 以丙二醇甲醚、NaOH、氯甲烷为主要原料,进行相转移催化反应制备丙二醇二甲醚。采用正交实验法确定的反应条件为:丙二醇甲醚(PM)/NaOH摩尔比为1/1.5、反应温度为60-85℃、反应时间为6 h、搅拌速率为500 r/min、m(催化剂TC-1)/m(PM)=1/1.5,在此条件下丙二醇甲醚反应的转化率达93.8％。确定粗产品精馏工艺的反应条件为:釜温99-100℃、顶温94℃、回流比为1,精馏得到丙二醇二甲醚的纯度大于99.5％。
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| 关 键 词： | 丙二醇甲醚 氯甲烷 丙二醇二甲醚 相转移催化剂 合成 |
| 文章编号： | 1000-8144(2004)04-0356-04 |
| 修稿时间： | 2003年10月8日 |
Synthesis of Propylene Glycol Dimethyl Ether |
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| Zhu Xinbao,Wang Puquan,Zang Ying.Synthesis of Propylene Glycol Dimethyl Ether[J].Petrochemical Technology,2004,33(4):356-359. |
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| Authors: | Zhu Xinbao Wang Puquan Zang Ying |
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| Abstract: | Synthesis of propylene glycol dimethyl ether(DMPG)based on the Williamson reaction of propylene glycol methyl ether(PM)with sodium hydroxide and monochloromethane was investigated. Optimized conditions were selected by orthogonal design method: PM/NaOH mole ratio was 1/1.5, reaction time 6 h, stirring rate 500 r/min,reaction temperature 60 - 85 ℃ ,and dosage of catalyst TC-1 100 g(mass of PM 150 g). Conversion of PM could reach 93.8%. Distillation parameters of product were also determined: column bottom temperature 99 - 100 ℃ ,overhead temperature 94 ℃ and reflux ratio 1. Purity of DMPG was more than 99.5% . |
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| Keywords: | propylene glycol monomethyl ether monochloromethane propylene glycol dimethyl ether phase transfer catalyst synthesis |
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